Causes and repair methods of wall peeling

First shovel off the cracked empty wall skin and see the reason of the wall skin. If it's wet, look carefully. Maybe the concealed pipe in the room is leaking. If it is on the top floor, it may be waterproof on the top.

Falling position of wall skin

The position where the wall skin falls off is in the upper left corner of the living room, which may be the problem of the ceiling.

Unqualified cement layer

Before the putty is scraped, the cement layer on the wall is unqualified, which is easy to cause the wall skin to fall off in the later period. If you want to repair it, you must shovel off the cement layer.

Scrape putty again

Scraping putty again and brushing latex paint will cause color difference with other walls, so it is best to redo the whole wall.